I think it is a good decision to do ethereum staking if you strongly believe in it and you have ethereum that you don’t use.
I don’t think this is a good decision because you don’t know when your coins will be unlocked.
And during this time, you can, for example, sell ethereum for $ 6,000 and buy this coin, for example, for $ 2,000.
After the end of Ethereum mining, users will be able to manage their coins, then you can think about such an investment.
As he said before, it's good only if you strongly believe that this coin will have higher price than right now in the future, so the focus is no longer about the current price or we could have a chance to sell it at high price and buy it again lower, but it's about earning the amount of ETH as much as possible and sell it later in the future. So it's no problem we don't know the exact date when our coins will be unlocked in the future.